In spite of the diplomatic rupture with America, the unrestricted submarine warfare is nevertheless the right means to conclude this war victoriously.
42.
This was the period of unrestricted submarine warfare, and the Admiralty eventually decided to operate a convoy system in the North Atlantic.
43.
Within hours of the Pearl Harbor attack, in retribution against Japan, Roosevelt promulgated a new doctrine : unrestricted submarine warfare against Japan.
44.
With the introduction of unrestricted submarine warfare in 1916 the Ministry of Munitions became concerned about the availability of foreign iron ore.
45.
British determination to clear the Belgian coast took on more urgency, after the Germans resumed unrestricted submarine warfare on 1 February 1917.
46.
With the growing discontent of the German public due to the food shortages, however, the government resumed unrestricted submarine warfare in February 1917.
47.
The resumption of unrestricted submarine warfare and the Zimmermann Telegram caused the United States to declare war on Germany on April 6, 1917.
48.
Unrestricted submarine warfare caused the United States to declare war on 6 April and failed to isolate Britain from its overseas sources of supply.
49.
He called for vigorous warfare without regard for diplomatic and commercial consequences and supported the most extreme use of weapons, especially unrestricted submarine warfare.
50.
The message came as a resumption of unrestricted submarine warfare by Germany on 1 February, an act which Germany presumed would lead to war.
